virtual void DrawButtonDisable( WXHDC dc, int left, int top, int right, int bottom, bool with_marg );
protected:
+ // reimplement some base class virtuals
virtual wxSize DoGetBestSize() const;
+ virtual void OnSetBitmap();
// invalidate m_brushDisabled when system colours change
void OnSysColourChanged(wxSysColourChangedEvent& event);